/*
* jQuery UI Tabs 1.6rc6
*
* Copyright (c) 2009 AUTHORS.txt (http://ui.jquery.com/about)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* http://docs.jquery.com/UI/Tabs
*
* Depends:
*	ui.core.js
*/
(function($) {

    $.widget("ui.tabs", {

        _init: function() {
            // create tabs
            this._tabify(true);
        },

        _setData: function(key, value) {
            if ((/^selected/).test(key))
                this.select(value);
            else {
                this.options[key] = value;
                this._tabify();
            }
        },

        _tabId: function(a) {
            return a.title && a.title.replace(/\s/g, '_').replace(/[^A-Za-z0-9\-_:\.]/g, '')
			|| this.options.idPrefix + $.data(a);
        },

        _sanitizeSelector: function(hash) {
            return hash.replace(/:/g, '\\:'); // we need this because an id may contain a ":"
        },

        _cookie: function() {
            var cookie = this.cookie || (this.cookie = this.options.cookie.name || 'ui-tabs-' + $.data(this.list[0]));
            return $.cookie.apply(null, [cookie].concat($.makeArray(arguments)));
        },

        _ui: function(tab, panel) {
            return {
                tab: tab,
                panel: panel,
                index: this.$tabs.index(tab)
            };
        },

        _tabify: function(init) {

            this.list = this.element.is('div') ? this.element.children('ul:first, ol:first').eq(0) : this.element;
            this.$lis = $('li:has(a[href])', this.list);
            this.$tabs = this.$lis.map(function() { return $('a', this)[0]; });
            this.$panels = $([]);

            var self = this, o = this.options;

            var fragmentId = /^#.+/; // Safari 2 reports '#' for an empty hash
            this.$tabs.each(function(i, a) {
                var href = $(a).attr('href');

                // inline tab
                if (fragmentId.test(href))
                    self.$panels = self.$panels.add(self._sanitizeSelector(href));

                // remote tab
                else if (href != '#') { // prevent loading the page itself if href is just "#"
                    $.data(a, 'href.tabs', href); // required for restore on destroy

                    // TODO until #3808 is fixed strip fragment identifier from url
                    // (IE fails to load from such url)
                    $.data(a, 'load.tabs', href.replace(/#.*$/, '')); // mutable data

                    var id = self._tabId(a);
                    a.href = '#' + id;
                    var $panel = $('#' + id);
                    if (!$panel.length) {
                        $panel = $(o.panelTemplate).attr('id', id).addClass('ui-tabs-panel ui-widget-content ui-corner-bottom')
						.insertAfter(self.$panels[i - 1] || self.list);
                        $panel.data('destroy.tabs', true);
                    }
                    self.$panels = self.$panels.add($panel);
                }

                // invalid tab href
                else
                    o.disabled.push(i + 1);
            });

            // initialization from scratch
            if (init) {

                // attach necessary classes for styling
                if (this.element.is('div')) {
                    this.element.addClass('ui-tabs ui-widget ui-widget-content ui-corner-all');
                }
                this.list.addClass('ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all');
                this.$lis.addClass('ui-state-default ui-corner-top');
                this.$panels.addClass('ui-tabs-panel ui-widget-content ui-corner-bottom');

                // Selected tab
                // use "selected" option or try to retrieve:
                // 1. from fragment identifier in url
                // 2. from cookie
                // 3. from selected class attribute on <li>
                if (o.selected === undefined) {
                    if (location.hash) {
                        this.$tabs.each(function(i, a) {
                            if (a.hash == location.hash) {
                                o.selected = i;
                                return false; // break
                            }
                        });
                    }
                    else if (o.cookie)
                        o.selected = parseInt(self._cookie(), 10);

                    else if (this.$lis.filter('.ui-tabs-selected').length)
                        o.selected = this.$lis.index(this.$lis.filter('.ui-tabs-selected'));

                    else
                        o.selected = 0;

                }
                else if (o.selected === null)
                    o.selected = -1;

                // sanity check
                o.selected = ((o.selected >= 0 && this.$tabs[o.selected]) || o.selected < 0) ? o.selected : 0; // default to first tab

                // Take disabling tabs via class attribute from HTML
                // into account and update option properly.
                // A selected tab cannot become disabled.
                o.disabled = $.unique(o.disabled.concat(
				$.map(this.$lis.filter('.ui-state-disabled'),
					function(n, i) { return self.$lis.index(n); })
			)).sort();
                if ($.inArray(o.selected, o.disabled) != -1)
                    o.disabled.splice($.inArray(o.selected, o.disabled), 1);

                // highlight selected tab
                this.$panels.addClass('ui-tabs-hide');
                this.$lis.removeClass('ui-tabs-selected ui-state-active');
                if (o.selected >= 0 && this.$tabs.length) { // check for length avoids error when initializing empty list
                    this.$panels.eq(o.selected).removeClass('ui-tabs-hide');
                    var classes = ['ui-tabs-selected ui-state-active'];
                    if (o.deselectable) classes.push('ui-tabs-deselectable');
                    this.$lis.eq(o.selected).addClass(classes.join(' '));

                    // seems to be expected behavior that the show callback is fired
                    var onShow = function() {
                        self._trigger('show', null,
						self._ui(self.$tabs[o.selected], self.$panels[o.selected]));
                    };

                    // load if remote tab
                    if ($.data(this.$tabs[o.selected], 'load.tabs'))
                        this.load(o.selected, onShow);
                    // just trigger show event
                    else onShow();
                }

                // states
                if (o.event != 'mouseover') {
                    var handleState = function(state, el) {
                        if (el.is(':not(.ui-state-disabled)')) el.toggleClass('ui-state-' + state);
                    };
                    this.$lis.bind('mouseover.tabs mouseout.tabs', function() {
                        handleState('hover', $(this));
                    });
                    // TODO focus/blur don't seem to work with namespace
                    this.$tabs.bind('focus.tabs blur.tabs', function() {
                        handleState('focus', $(this).parents('li:first'));
                    });
                }

                // clean up to avoid memory leaks in certain versions of IE 6
                $(window).bind('unload', function() {
                    self.$lis.add(self.$tabs).unbind('.tabs');
                    self.$lis = self.$tabs = self.$panels = null;
                });

            }
            // update selected after add/remove
            else
                o.selected = this.$lis.index(this.$lis.filter('.ui-tabs-selected'));

            // set or update cookie after init and add/remove respectively
            if (o.cookie) this._cookie(o.selected, o.cookie);

            // disable tabs
            for (var i = 0, li; li = this.$lis[i]; i++)
                $(li)[$.inArray(i, o.disabled) != -1 && !$(li).hasClass('ui-tabs-selected') ? 'addClass' : 'removeClass']('ui-state-disabled');

            // reset cache if switching from cached to not cached
            if (o.cache === false) this.$tabs.removeData('cache.tabs');

            // set up animations
            var hideFx, showFx;
            if (o.fx) {
                if ($.isArray(o.fx)) {
                    hideFx = o.fx[0];
                    showFx = o.fx[1];
                }
                else hideFx = showFx = o.fx;
            }

            // Reset certain styles left over from animation
            // and prevent IE's ClearType bug...
            function resetStyle($el, fx) {
                $el.css({ display: '' });
                if ($.browser.msie && fx.opacity) $el[0].style.removeAttribute('filter');
            }

            // Show a tab...
            var showTab = showFx ?
			function(clicked, $show) {
			    $show.hide().removeClass('ui-tabs-hide') // avoid flicker that way
					.animate(showFx, 500, function() {
					    resetStyle($show, showFx);
					    self._trigger('show', null, self._ui(clicked, $show[0]));
					});
			} :
			function(clicked, $show) {
			    $show.removeClass('ui-tabs-hide');
			    self._trigger('show', null, self._ui(clicked, $show[0]));
			};

            // Hide a tab, $show is optional...
            var hideTab = hideFx ?
			function(clicked, $hide, $show) {
			    $hide.animate(hideFx, hideFx.duration || 'normal', function() {
			        $hide.addClass('ui-tabs-hide');
			        resetStyle($hide, hideFx);
			        if ($show) showTab(clicked, $show);
			    });
			} :
			function(clicked, $hide, $show) {
			    $hide.addClass('ui-tabs-hide');
			    if ($show) showTab(clicked, $show);
			};

            // Switch a tab...
            function switchTab(clicked, $li, $hide, $show) {
                var classes = ['ui-tabs-selected ui-state-active'];
                if (o.deselectable) classes.push('ui-tabs-deselectable');
                $li.removeClass('ui-state-default').addClass(classes.join(' '))
				.siblings().removeClass(classes.join(' ')).addClass('ui-state-default');
                hideTab(clicked, $hide, $show);
            }

            // attach tab event handler, unbind to avoid duplicates from former tabifying...
            this.$tabs.unbind('.tabs').bind(o.event + '.tabs', function() {

                var $li = $(this).parents('li:eq(0)'),
				$hide = self.$panels.filter(':visible'),
				$show = $(self._sanitizeSelector(this.hash));

                // If tab is already selected and not deselectable or tab disabled or
                // or is already loading or click callback returns false stop here.
                // Check if click handler returns false last so that it is not executed
                // for a disabled or loading tab!
                if (($li.hasClass('ui-state-active') && !o.deselectable)
				|| $li.hasClass('ui-state-disabled')
				|| $(this).hasClass('ui-tabs-loading')
				|| self._trigger('select', null, self._ui(this, $show[0])) === false
				) {
                    this.blur();
                    return false;
                }

                o.selected = self.$tabs.index(this);

                // if tab may be closed TODO avoid redundant code in this block
                if (o.deselectable) {
                    if ($li.hasClass('ui-state-active')) {
                        o.selected = -1;
                        if (o.cookie) self._cookie(o.selected, o.cookie);
                        $li.removeClass('ui-tabs-selected ui-state-active ui-tabs-deselectable')
						.addClass('ui-state-default');
                        self.$panels.stop();
                        hideTab(this, $hide);
                        this.blur();
                        return false;
                    } else if (!$hide.length) {
                        if (o.cookie) self._cookie(o.selected, o.cookie);
                        self.$panels.stop();
                        var a = this;
                        self.load(self.$tabs.index(this), function() {
                            $li.addClass('ui-tabs-selected ui-state-active ui-tabs-deselectable')
							.removeClass('ui-state-default');
                            showTab(a, $show);
                        });
                        this.blur();
                        return false;
                    }
                }

                if (o.cookie) self._cookie(o.selected, o.cookie);

                // stop possibly running animations
                self.$panels.stop();

                // show new tab
                if ($show.length) {
                    var a = this;
                    self.load(self.$tabs.index(this), $hide.length ?
					function() {
					    switchTab(a, $li, $hide, $show);
					} :
					function() {
					    $li.addClass('ui-tabs-selected ui-state-active').removeClass('ui-state-default');
					    showTab(a, $show);
					}
				);
                } else
                    throw 'jQuery UI Tabs: Mismatching fragment identifier.';

                // Prevent IE from keeping other link focussed when using the back button
                // and remove dotted border from clicked link. This is controlled via CSS
                // in modern browsers; blur() removes focus from address bar in Firefox
                // which can become a usability and annoying problem with tabs('rotate').
                if ($.browser.msie) this.blur();

                return false;

            });

            // disable click if event is configured to something else
            if (o.event != 'click') this.$tabs.bind('click.tabs', function() { return false; });

        },

        destroy: function() {
            var o = this.options;

            this.element
			.removeClass('ui-tabs ui-widget ui-widget-content ui-corner-all');

            this.list.unbind('.tabs')
			.removeClass('ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all')
			.removeData('tabs');

            this.$tabs.each(function() {
                var href = $.data(this, 'href.tabs');
                if (href)
                    this.href = href;
                var $this = $(this).unbind('.tabs');
                $.each(['href', 'load', 'cache'], function(i, prefix) {
                    $this.removeData(prefix + '.tabs');
                });
            });

            this.$lis.unbind('.tabs').add(this.$panels).each(function() {
                if ($.data(this, 'destroy.tabs'))
                    $(this).remove();
                else
                    $(this).removeClass(
					'ui-state-default ' +
					'ui-corner-top ' +
					'ui-tabs-selected ' +
					'ui-state-active ' +
					'ui-tabs-deselectable ' +
					'ui-state-disabled ' +
					'ui-tabs-panel ' +
					'ui-widget-content ' +
					'ui-corner-bottom ' +
					'ui-tabs-hide');
            });

            if (o.cookie)
                this._cookie(null, o.cookie);
        },

        add: function(url, label, index) {
            if (index == undefined)
                index = this.$tabs.length; // append by default

            var self = this, o = this.options;
            var $li = $(o.tabTemplate.replace(/#\{href\}/g, url).replace(/#\{label\}/g, label));
            $li.addClass('ui-state-default ui-corner-top').data('destroy.tabs', true);

            var id = url.indexOf('#') == 0 ? url.replace('#', '') : this._tabId($('a:first-child', $li)[0]);

            // try to find an existing element before creating a new one
            var $panel = $('#' + id);
            if (!$panel.length) {
                $panel = $(o.panelTemplate).attr('id', id).data('destroy.tabs', true);
            }
            $panel.addClass('ui-tabs-panel ui-widget-content ui-corner-bottom ui-tabs-hide');
            if (index >= this.$lis.length) {
                $li.appendTo(this.list);
                $panel.appendTo(this.list[0].parentNode);
            }
            else {
                $li.insertBefore(this.$lis[index]);
                $panel.insertBefore(this.$panels[index]);
            }

            o.disabled = $.map(o.disabled,
			function(n, i) { return n >= index ? ++n : n });

            this._tabify();

            if (this.$tabs.length == 1) { // after tabify
                $li.addClass('ui-tabs-selected ui-state-active');
                $panel.removeClass('ui-tabs-hide');
                var href = $.data(this.$tabs[0], 'load.tabs');
                if (href) this.load(0, function() {
                    self._trigger('show', null,
					self._ui(self.$tabs[0], self.$panels[0]));
                });
            }

            // callback
            this._trigger('add', null, this._ui(this.$tabs[index], this.$panels[index]));
        },

        remove: function(index) {
            var o = this.options, $li = this.$lis.eq(index).remove(),
			$panel = this.$panels.eq(index).remove();

            // If selected tab was removed focus tab to the right or
            // in case the last tab was removed the tab to the left.
            if ($li.hasClass('ui-tabs-selected') && this.$tabs.length > 1)
                this.select(index + (index + 1 < this.$tabs.length ? 1 : -1));

            o.disabled = $.map($.grep(o.disabled, function(n, i) { return n != index; }),
			function(n, i) { return n >= index ? --n : n });

            this._tabify();

            // callback
            this._trigger('remove', null, this._ui($li.find('a')[0], $panel[0]));
        },

        enable: function(index) {
            var o = this.options;
            if ($.inArray(index, o.disabled) == -1)
                return;

            this.$lis.eq(index).removeClass('ui-state-disabled');
            o.disabled = $.grep(o.disabled, function(n, i) { return n != index; });

            // callback
            this._trigger('enable', null, this._ui(this.$tabs[index], this.$panels[index]));
        },

        disable: function(index) {
            var self = this, o = this.options;
            if (index != o.selected) { // cannot disable already selected tab
                this.$lis.eq(index).addClass('ui-state-disabled');

                o.disabled.push(index);
                o.disabled.sort();

                // callback
                this._trigger('disable', null, this._ui(this.$tabs[index], this.$panels[index]));
            }
        },

        select: function(index) {
            if (typeof index == 'string')
                index = this.$tabs.index(this.$tabs.filter('[href$=' + index + ']'));
            this.$tabs.eq(index).trigger(this.options.event + '.tabs');
        },

        load: function(index, callback) { // callback is for internal usage only

            var self = this, o = this.options, $a = this.$tabs.eq(index), a = $a[0],
				bypassCache = callback == undefined || callback === false, url = $a.data('load.tabs');
            // TODO bypassCache == false should work

            callback = callback || function() { };

            // no remote or from cache - just finish with callback
            // TODO in any case: insert cancel running load here..!

            if (!url || !bypassCache && $.data(a, 'cache.tabs')) {
                callback();
                return;
            }

            // load remote from here on

            var inner = function(parent) {
                var $parent = $(parent), $inner = $parent.find('*:last');
                return $inner.length && $inner.is(':not(img)') && $inner || $parent;
            };
            var cleanup = function() {
                self.$tabs.filter('.ui-tabs-loading').removeClass('ui-tabs-loading')
					.each(function() {
					    if (o.spinner)
					        inner(this).parent().html(inner(this).data('label.tabs'));
					});
                self.xhr = null;
            };

            if (o.spinner) {
                var label = inner(a).html();
                inner(a).wrapInner('<em></em>')
				.find('em').data('label.tabs', label).html(o.spinner);
            }

            var ajaxOptions = $.extend({}, o.ajaxOptions, {
                url: url,
                success: function(r, s) {
                    $(self._sanitizeSelector(a.hash)).html(r);
                    cleanup();

                    if (o.cache)
                        $.data(a, 'cache.tabs', true); // if loaded once do not load them again

                    // callbacks
                    self._trigger('load', null, self._ui(self.$tabs[index], self.$panels[index]));
                    try {
                        o.ajaxOptions.success(r, s);
                    }
                    catch (er) { }

                    // This callback is required because the switch has to take
                    // place after loading has completed. Call last in order to
                    // fire load before show callback...
                    callback();
                }
            });
            if (this.xhr) {
                // terminate pending requests from other tabs and restore tab label
                this.xhr.abort();
                cleanup();
            }
            $a.addClass('ui-tabs-loading');
            self.xhr = $.ajax(ajaxOptions);
        },

        url: function(index, url) {
            this.$tabs.eq(index).removeData('cache.tabs').data('load.tabs', url);
        },

        length: function() {
            return this.$tabs.length;
        }

    });

    $.extend($.ui.tabs, {
        version: '1.6rc6',
        getter: 'length',
        defaults: {
            ajaxOptions: null,
            cache: false,
            cookie: null, // e.g. { expires: 7, path: '/', domain: 'jquery.com', secure: true }
            deselectable: false,
            disabled: [],
            event: 'click',
            fx: null, // e.g. { height: 'toggle', opacity: 'toggle', duration: 200 }
            idPrefix: 'ui-tabs-',
            panelTemplate: '<div></div>',
            spinner: 'Loading&#8230;',
            tabTemplate: '<li><a href="#{href}"><span>#{label}</span></a></li>'
        }
    });

    /*
    * Tabs Extensions
    */

    /*
    * Rotate
    */
    $.extend($.ui.tabs.prototype, {
        rotation: null,
        rotate: function(ms, continuing) {

            var self = this, t = this.options.selected;

            function rotate() {
                clearTimeout(self.rotation);
                self.rotation = setTimeout(function() {
                    t = ++t < self.$tabs.length ? t : 0;
                    self.select(t);
                }, ms);
            }

            // start rotation
            if (ms) {
                this.element.bind('tabsshow', rotate); // will not be attached twice
                this.$tabs.bind(this.options.event + '.tabs', !continuing ?
				function(e) {
				    if (e.clientX) { // in case of a true click
				        clearTimeout(self.rotation);
				        self.element.unbind('tabsshow', rotate);
				    }
				} :
				function(e) {
				    t = self.options.selected;
				    rotate();
				}
			);
                rotate();
            }
            // stop rotation
            else {
                clearTimeout(self.rotation);
                this.element.unbind('tabsshow', rotate);
                this.$tabs.unbind(this.options.event + '.tabs', stop);
            }
        }
    });

})(jQuery);